LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_zgejsv_work()

lapack_int LAPACKE_zgejsv_work ( int  matrix_layout,
char  joba,
char  jobu,
char  jobv,
char  jobr,
char  jobt,
char  jobp,
lapack_int  m,
lapack_int  n,
lapack_complex_double *  a,
lapack_int  lda,
double *  sva,
lapack_complex_double *  u,
lapack_int  ldu,
lapack_complex_double *  v,
lapack_int  ldv,
lapack_complex_double *  cwork,
lapack_int  lwork,
double *  rwork,
lapack_int  lrwork,
lapack_int *  iwork 
)

Definition at line 35 of file lapacke_zgejsv_work.c.

43{
44 lapack_int info = 0;
45 if( matrix_layout == LAPACK_COL_MAJOR ) {
46 /* Call LAPACK function and adjust info */
47 LAPACK_zgejsv( &joba, &jobu, &jobv, &jobr, &jobt, &jobp, &m, &n, a,
48 &lda, sva, u, &ldu, v, &ldv, cwork, &lwork, rwork, &lrwork,
49 iwork, &info );
50 if( info < 0 ) {
51 info = info - 1;
52 }
53 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
54 lapack_int nu = LAPACKE_lsame( jobu, 'n' ) ? 1 : m;
55 lapack_int nv = LAPACKE_lsame( jobv, 'n' ) ? 1 : n;
56 lapack_int ncols_u = LAPACKE_lsame( jobu, 'n' ) ? 1 :
57 LAPACKE_lsame( jobu, 'f' ) ? m : n;
58 lapack_int lda_t = MAX(1,m);
59 lapack_int ldu_t = MAX(1,nu);
60 lapack_int ldv_t = MAX(1,nv);
61 lapack_complex_double* a_t = NULL;
62 lapack_complex_double* u_t = NULL;
63 lapack_complex_double* v_t = NULL;
64 /* Check leading dimension(s) */
65 if( lda < n ) {
66 info = -11;
67 LAPACKE_xerbla( "LAPACKE_zgejsv_work", info );
68 return info;
69 }
70 if( ldu < ncols_u ) {
71 info = -14;
72 LAPACKE_xerbla( "LAPACKE_zgejsv_work", info );
73 return info;
74 }
75 if( ldv < n ) {
76 info = -16;
77 LAPACKE_xerbla( "LAPACKE_zgejsv_work", info );
78 return info;
79 }
80 /* Allocate memory for temporary array(s) */
81 a_t = (lapack_complex_double*)
82 LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,n) );
83 if( a_t == NULL ) {
84 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
85 goto exit_level_0;
86 }
87 if( LAPACKE_lsame( jobu, 'f' ) || LAPACKE_lsame( jobu, 'u' ) ||
88 LAPACKE_lsame( jobu, 'w' ) ) {
89 u_t = (lapack_complex_double*)
90 LAPACKE_malloc( sizeof(lapack_complex_double) * ldu_t * MAX(1,ncols_u) );
91 if( u_t == NULL ) {
92 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
93 goto exit_level_1;
94 }
95 }
96 if( LAPACKE_lsame( jobv, 'j' ) || LAPACKE_lsame( jobv, 'v' ) ||
97 LAPACKE_lsame( jobv, 'w' ) ) {
98 v_t = (lapack_complex_double*)
99 LAPACKE_malloc( sizeof(lapack_complex_double) * ldv_t * MAX(1,n) );
100 if( v_t == NULL ) {
101 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
102 goto exit_level_2;
103 }
104 }
105 /* Transpose input matrices */
106 LAPACKE_zge_trans( matrix_layout, m, n, a, lda, a_t, lda_t );
107 /* Call LAPACK function and adjust info */
108 LAPACK_zgejsv( &joba, &jobu, &jobv, &jobr, &jobt, &jobp, &m, &n, a_t,
109 &lda_t, sva, u_t, &ldu_t, v_t, &ldv_t, cwork, &lwork,
110 rwork, &lrwork, iwork, &info );
111 if( info < 0 ) {
112 info = info - 1;
113 }
114 /* Transpose output matrices */
115 if( LAPACKE_lsame( jobu, 'f' ) || LAPACKE_lsame( jobu, 'u' ) ||
116 LAPACKE_lsame( jobu, 'w' ) ) {
117 LAPACKE_zge_trans( LAPACK_COL_MAJOR, nu, ncols_u, u_t, ldu_t, u, ldu );
118 }
119 if( LAPACKE_lsame( jobv, 'j' ) || LAPACKE_lsame( jobv, 'v' ) ||
120 LAPACKE_lsame( jobv, 'w' ) ) {
121 LAPACKE_zge_trans( LAPACK_COL_MAJOR, nv, n, v_t, ldv_t, v, ldv );
122 }
123 /* Release memory and exit */
124 if( LAPACKE_lsame( jobv, 'j' ) || LAPACKE_lsame( jobv, 'v' ) ||
125 LAPACKE_lsame( jobv, 'w' ) ) {
126 LAPACKE_free( v_t );
127 }
128exit_level_2:
129 if( LAPACKE_lsame( jobu, 'f' ) || LAPACKE_lsame( jobu, 'u' ) ||
130 LAPACKE_lsame( jobu, 'w' ) ) {
131 LAPACKE_free( u_t );
132 }
133exit_level_1:
134 LAPACKE_free( a_t );
135exit_level_0:
136 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
137 LAPACKE_xerbla( "LAPACKE_zgejsv_work", info );
138 }
139 } else {
140 info = -1;
141 LAPACKE_xerbla( "LAPACKE_zgejsv_work", info );
142 }
143 return info;
144}
lapack_int
#define lapack_int
Definition: lapack.h:87
LAPACK_zgejsv
#define LAPACK_zgejsv(...)
Definition: lapack.h:2105
lapack_complex_double
#define lapack_complex_double
Definition: lapack.h:64
LAPACK_COL_MAJOR
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
LAPACKE_free
#define LAPACKE_free(p)
Definition: lapacke.h:46
LAPACK_ROW_MAJOR
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
LAPACKE_malloc
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
LAPACK_TRANSPOSE_MEMORY_ERROR
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:56
LAPACKE_lsame
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
LAPACKE_xerbla
void LAPACKE_xerbla(const char *name, lapack_int info)
Definition: lapacke_xerbla.c:36
LAPACKE_zge_trans
void LAPACKE_zge_trans(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *in, lapack_int ldin, lapack_complex_double *out, lapack_int ldout)
Definition: lapacke_zge_trans.c:39
MAX
#define MAX(x, y)
Definition: lapacke_utils.h:46
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